IPC's current monitors are wide band current transformers that measure ac or pulse currents with an oscilloscope or other voltage-sensing instrument.
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This NI tutorial shows how to use LabVIEW and the LabVIEW Control Design and Simulation Module to construct a dynamic system from basic physical laws. MORE
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Sacher Lasertechnik offers fiber coupled optical amplifiers. Available wavelength: 650nm to 1120nm. Free space power of up to 2.5W @ 780nm and 2W @ 850nm are achieved with an M²<1.7. Contact us at 1-800-352-3639 or
www.sacher-laser.com.
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Lenses can bend light and sound in almost any direction
PhysOrg
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When an optical fiber is bent by 90 degrees or more, the light begins to leak away, posing a problem for fiber optics communications. But by using special lenses that can bend light by not only 90 degrees, but also 180 degrees (i.e., a U-turn) or 360 degrees (i.e., a full loop), scientists may limit light leakage in optical fibers and overcome this problem, not to mention provide a useful material for many other applications. Recently, a team of scientists has theoretically investigated materials for achieving this kind of advanced light control, which could work equally well for sound waves.
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Electrons tunnel nicely through boron nitride
Physics World
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Ultrathin sheets of hexagonal boron nitride (h-BN) could make for the ideal dielectric layer in future electronic components, thanks to a high degree of uniformity in how electrons tunnel through the material. That is the claim of an international team of researchers that is studying how the material performs as a barrier layer that is sandwiched between two conducting layers. The team found that the tunnel current depends exponentially on the number of h-BN atomic layers - down to just a single-layer thickness. The result bodes well for using h-BN in electronic components such as tunnel devices and ultrafast field-effect transistors, say the researchers.
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Returns to “OFF” position in case of power failure
- Integrated return spring
- 0.5” (13mm) & 1” (25mm) aperture
- High reliability, long life available
- 5V, 12V or 24V dc operation
- Boxed unit available
- Mounting to optical table available
- Simple drive circuit for TTL input
- Low cost
- Standard and custom
- Special pricing for OEM applications
- Stock items
- RoHS compliant
- Optional position indicators
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We manufacture precision electronic instrumentation for both laboratory and industrial process control applications, and offer a full line of cryogenic temperature controllers, monitors, cryogenic accessories and temperature sensors. Instruments feature a wide temperature range (operation from 20mK to over 1500K), network connectivity and supports a wider variety of temperature sensors than any other manufacturer. MORE
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Quantum Design manufactures a full line of cryogen-free, automated material characterization systems for the scientific community. These systems provide temperatures from 0.05 to 1000 K and magnet fields up to 16 tesla. Cryogen-free systems include the Physical Property Measurement System (PPMS®), MPMS SQUID VSM, VersaLab, and the new PPMS DynaCool. MORE
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Electrons may be the glue in cuprate superconductors
Ars Technica
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A new optical examination of a bismuth-based cuprate superconductor has demonstrated that electronic excitations may be the primary driver of the superconducting transition.
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Embattled neutrino project leaders step down
Nature News
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No-confidence vote follows confirmation of faults in experiment's cable and clock.
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Quantum interference: the movie
Physics World
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The first real-time movie of large molecules creating an interference pattern after passing through two slits has been made by an international team of physicists. As well as being a beautiful example of the wave-particle duality of quantum mechanics, the technique could provide further insight into the boundaries between quantum and classical physics.
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VAT will preview a variety of vacuum valves in Santa Clara at booth #616. Stop by or check out our new website to learn more about VAT! MORE
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• Multiple configurations: XY, XYZ Theta, Gantry
• 13 mm - 450 mm travel
• Integrated controllers
• High speed, thrust and accuracy
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Scientists pin down historic sea level rise
Reuters via Scientific American
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The collapse of an ice sheet in Antarctica up to 14,650 years ago might have caused sea levels to rise between 14 and 18 meters (46-60 feet), a study showed, data which could help make more accurate climate change predictions.
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Cloaks for hiding heat
ScienceNews
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Until now, most invisibility cloaks have been made from metamaterials that guide light waves around a certain region of space, obscuring anything that lies within from sight. Now, physicists have described a theoretical cloak that can shield a protected area from intense temperatures.
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Lightning directed by laser beams
NewScientist
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It's not quite Zeus, but at least it's not entirely myth. Lasers have been used for the first time to trigger and divert lightning bolts.
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Life-changing experiments: The biological Higgs
Nature News
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Biologists ponder what fundamental discoveries might match the excitement of the Higgs boson.
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FT Spectrometers that cover UV to THz spectral range:
- Vacuum and purge models
- Nanosecond temporal resolution
- Modulation/demodulation experiments
- Spectral imaging
- Interface with custom external optics
Visit our website at www.brukeroptics.com for more information
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Our goal is to develop and manufacture today the cryorefrigerators required for tomorrow.
WORLD MANUFACTURERS OF:
•Cryorefrigerators: Pulse Tube and Gifford McMahon Cycle
• Liquid Helium Plants and Liquid Helium Management Products
• Liquid Nitrogen Plants
• Helium Recovery Systems
To learn more, click here.
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Need fast photonic timing components with a wide range of spectral response? PHOTONIS offers a family of high-speed, high resolution components to support a variety of applications. Many components are customizable by photocathode, configuration or other options. Ideal for high-energy physics, non-destructive testing, fluorescence, LIDAR, communications or single photon counting.
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APS Weekly NewsBrief
Colby Horton, Vice President of Publishing, 469.420.2601
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Jennifer Maddox, Senior Content Editor, 469.420.2613
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To provide feedback to APS, please contact Trish Lettieri, APS Director of Membership 301.209.3272
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Recent issues
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